M20D-FKS ENGINE CONTROL SFI SYSTEM P045011 Evaporative Emission System Pressure Sensor/Switch Circuit Short to Ground P045015 Evaporative Emission System Pressure Sensor/Switch Circuit Short to Battery or Open P04502F Evaporative Emission System Pressure Sensor/Switch Signal Erratic
DTC SUMMARY
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P045011 | Evaporative Emission System Pressure Sensor/Switch Circuit Short to Ground | EVAP pressure less than 42.11 kPa(abs) [6.11 psi(abs)] for 0.5 seconds. | ·
Canister pump module ·
Wire harness or connector (canister pump module - ECM) ·
ECM |
Comes on | DTC stored | SAE: P0452 |
| P045015 | Evaporative Emission System Pressure Sensor/Switch Circuit Short to Battery or Open | EVAP pressure higher than 123.761 kPa(abs) [17.95 psi(abs)] for 0.5 seconds. | ·
Canister pump module ·
Wire harness or connector (canister pump module - ECM) ·
ECM |
Comes on | DTC stored | SAE: P0453 |
| P04502F | Evaporative Emission System Pressure Sensor/Switch Signal Erratic | Canister pressure sensor output voltage fluctuates frequently in a certain time period. | ·
Canister pump module ·
Wire harness or connector (canister pump module - ECM) ·
EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose) ·
ECM |
Comes on | DTC stored | SAE: P0451 |
| DTC No. | Monitoring Item | Detection Timing | Detection Logic | SAE |
|---|---|---|---|---|
| P045011 | Canister pressure sensor low input | ·
Ignition switch ON ·
EVAP monitoring (ignition switch off) |
1 trip | P0452 |
| P045015 | Canister pressure sensor high input | ·
Ignition switch ON ·
EVAP monitoring (ignition switch off) |
1 trip | P0453 |
| P04502F | Canister pressure sensor abnormal voltage fluctuation | ·
EVAP monitoring (ignition switch off) ·
Engine running |
2 trip | P0451 |
- HINT:
-
The canister pressure sensor is built into the canister pump module.
DESCRIPTION
The description can be found in EVAP (Evaporative Emission) System.
MONITOR DESCRIPTION
DTC P045011: Canister pressure sensor voltage low
If the canister pressure sensor voltage output (pressure) is less than 0.45 V: 42.11 kPa(abs) [6.11 psi(abs)], the ECM interprets this as an open or short circuit in the canister pressure sensor or its circuit, and stops the EVAP system monitor. The ECM will illuminate the MIL and store this DTC (1 trip detection logic).
DTC P045015: Canister pressure sensor voltage high
If the canister pressure sensor voltage output (pressure) is higher than 4.9 V: 123.761 kPa(abs) [17.95 psi(abs)], the ECM interprets this as an open or short circuit in the canister pressure sensor or its circuit, and stops the EVAP system monitor. The ECM will illuminate the MIL and store this DTC (1 trip detection logic).
DTC P04502F: Canister pressure sensor abnormal voltage fluctuation
If the canister pressure sensor voltage output fluctuates rapidly for 10 seconds, the ECM stops the EVAP system monitor. The ECM interprets this as the canister pressure sensor voltage fluctuating, and stops the EVAP system monitor. The ECM will illuminate the MIL and store this DTC (2 trip detection logic).
MONITOR STRATEGY
| Required Sensors/Components | Canister pump module |
| Frequency of Operation | Continuous |
CONFIRMATION DRIVING PATTERN
- NOTICE:
- ·
The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the GTS. It takes a maximum of approximately 24 minutes.
·Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
·Do not run the engine during this operation.
·When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the fuel temperature less than 35°C (95°F).
- HINT:
- ·
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
·When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON [A].
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Data List / Intake Air Temperature.
Check that the intake air temperature is between 4.4 and 50°C (40 and 122°F) [B].
Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode [C].
After the Evaporative System Check is completed, check for All Readiness by entering the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P045011, P045015 or P04502F.
Check the DTC judgment result.
| GTS Display | Description |
|---|---|
| NORMAL | ·
DTC judgment completed ·
System normal |
| ABNORMAL | ·
DTC judgment completed ·
System abnormal |
| INCOMPLETE | ·
DTC judgment not completed ·
Perform driving pattern after confirming DTC enabling conditions |
- HINT:
- ·
If the judgment result is NORMAL, the system is normal.
·If the judgment result is ABNORMAL, the system is malfunctioning.
·[A] to [C]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
·When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
When a vehicle is brought into the workshop, leave it as it is. Do not change the vehicle condition. For example, do not tighten the fuel tank cap.
·The GTS is required to conduct the following diagnostic troubleshooting procedure.
·Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
Connect the GTS to the DLC3.
Turn the ignition switch to ON (do not start the engine).
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Trouble Codes.
Read the DTCs.
- Powertrain > Engine > Trouble Codes
- 50001 372
Enter the following menus: Powertrain / Engine / Data List / Vapor Pressure Pump.
- Powertrain > Engine > Data List
-
Tester Display Vapor Pressure Pump - 50003 372 160
Read the EVAP (Evaporative Emission) pressure displayed on the GTS.
- Result:
Display (DTC Output) Test Result Suspected Trouble Area Proceed to P045011 Less than 42.11 kPa(abs) [6.11 psi(abs)] ·Wire harness or connector (canister pressure sensor - ECM)
·Canister pressure sensor
·Short in ECM circuit
A P045015 Higher than 123.761 kPa(abs) [17.95 psi(abs)] ·Wire harness or connector (canister pressure sensor - ECM)
·Canister pressure sensor
·Open in ECM circuit
B P04502F - Canister pressure sensor C
A
B
C
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Result:
Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to A116-73 (PPMP) - Body ground Always Below 10 Ω ·Wire harness or connector (canister pressure sensor - ECM)
·Short in canister pressure sensor circuit
A 10 kΩ or higher ·Wire harness or connector (canister pressure sensor - ECM)
·Short in ECM circuit
B
A
B
Disconnect the canister pump module connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Result:
Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to A116-73 (PPMP) - Body ground Always 10 kΩ or higher Short in canister pressure sensor circuit A Below 10 Ω Short in wire harness or connector (canister pressure sensor - ECM) B
A
B
- Result:
Proceed to NEXT
NEXT
| *a | Front view of wire harness connector
(to Canister Pump Module) |
Disconnect the canister pump module connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition N29-8 (SGND) - Body ground Always 100 Ω or less
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition N29-6 (VCC) - Body ground Ignition switch ON 4.5 to 5.5 V N29-7 (VOUT) - Body ground Ignition switch ON 4.5 to 5.5 V
- Result:
Test Result Suspected Trouble Area Proceed to Voltage and resistance within standard ranges Open in canister pressure sensor circuit A Voltage and/or resistance outside standard ranges Open in wire harness or connector (canister pressure sensor - ECM) B
A
B
Replace the canister pump module.
- NOTICE:
- ·
When replacing the canister pump module, check the canister pump module interior, canister interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. If liquids are present in the canister interior, replace the canister and canister pump module together.
·Check for filter blockage in the canister. If the charcoal filter inside the canister is clogged, replace the canister and canister pump module together.
·Check for filter blockage in the canister filter. If the canister filter has blockages, replace the canister filter.
| *1 | Fuel Tank Vent Hose | *2 | Vent Hose |
| *3 | Air Inlet Port | *4 | Fuel Tank |
| *5 | Canister Pump Module | *6 | Canister |
| *7 | Canister Filter | *8 | No. 2 Charcoal Canister Filter |
| *9 | Fuel Tank Cap | - | - |
| *a | Inspection Area
(check for disconnection and/or cracks) |
- | - |
- Result:
Proceed to NEXT
NEXT
Repair or replace the harness or connector (canister pump module - ECM).
- Result:
Proceed to NEXT
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
NEXT
Perform the Evaporative System Check using the GTS, referring to Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
- Powertrain > Engine > Utility
-
Tester Display All Readiness - 50005 372 20
Input the DTC: P045011 or P045015.
Check the DTC judgment result.
| GTS Display | Description |
|---|---|
| NORMAL | ·
DTC judgment completed ·
System normal |
| ABNORMAL | ·
DTC judgment completed ·
System abnormal |
| INCOMPLETE | ·
DTC judgment not completed ·
Perform driving pattern after confirming DTC enabling conditions |
- Result:
Proceed to NEXT
NEXT